Angle-joint



J. MAIERS.

ANGLE JOINT.

APPLICATION FILED DEC. 10, I919. RENEWED FE8.17.192I- Patented se t. 27, 1921.

UNITED STATES PATENT OFFICE.

JOHN MAIERS, 0F PHILADELPHIA, PENNSYLVANIA.

ANGLE-JOINT.

To all whom it may concern. t

I Be it known that I, JoH-N' MAIERS, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented new and useful Improvements inf' Angle-Joints, of "which the following is a specification.

My invention relates to anew and useful improvement in angle joints, and has for its object to provide an exceedingly, simple and effective device of this description, which may be made entirely from a single piece of sheet metal so stamped and bent up as to produce the various members necessary for embracing and attaching to a joint.

A further object of my invention is to so design such a joint that when attached it will he pivoted to the corners of the frame or article to which it is attached and'if a frame render it more rigid.

A still further object of my invention is to so construct such a joint that it may be utilized for securing together the meeting ends of a wooden frame such as a window screen as well as protecting the corners thereof, and

A still further object of my invention is to soconstruct the blank from which the joint is bent that it may be shipped before bending, and the bending thereof accomplished at the time it is to be applied to the 'oint. With these ends in view, this invention consists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claims.

In order that those skilled in the art to which this invention appertains, may understand how to make and use the same, I will describe its construction in detail, referring by numerals to the accompanying drawing forming a part of this application, in which Figure 1, is a side elevation of a portion of a frame showing my improved joint ap plied thereto. 7

Fig. 2, is a section at the line 2-2 of Fig. 1.

Fig. 3, is a plan view of a blank from which the joint is to be formed.

Fig. 4, is a section at the line 4-4 of Fig. 3.

In carrying out my invention as here embodied, I form the blank from sheet metal by stamping or otherwise so as to produce Specification of Letters Patent. Patented Sept. 27, 1921. Application filed DecemberIO, 1919, Serial No. 343,894. Renewed February 17, 1921.

Serial No. 145,850.

two pairs of wings 2 and 3 separated by the cutaway portionA -these wings being connected with the central sections 5 and 6. by the scorings 7 which latter provide for the bending, of the wings at right angles to the central sections since a sliding pressure upon the wings willfcause them to bend upon the lines of thescoring as will be readily understood.

The central sections 5 and 6 are also connected by the scoring 8 which serves the same purpose as just described. The wings 2 are provided with extensions 9 while the wings 3 are also provided with extensions 10 and these extensions are of such shape that when the joint is formed up to fit the angle of a frame or other object these extensions will overlap each other as clearly shown in Figs. 1 and'2.

In one of the wings 2 and the extension thereof is formed a rectangular opening 11 while in one of the wings 3 and the extension thereof is formed a corresponding opening 12 for the purpose hereinafter explained.

13 represents prongs which are partially cut from one of each pair of wings and are intended to be turned inward as clearly indicated in Fig. 2, and these prongs pass through the openings 11 and 12 in order that they may be embedded in the woodwork of the frame 14 and as the wing and its extension carrying the prongs are so folded as to lie upon the wings and extensions having the openings 11 and 12 formed therein these prongs will not only secure the device to the frame, but will also hold the members of the joint in their proper relative positions.

15 represents prongs which are also partially cut from the wings and bent inward for embedding in the woodwork of the frame at points beyond the extensions of the'wings.

From the foregoing description it will be seen that a blank is provided which may be stamped from a single piece of sheet metal at a single operation and which may be readily stored or shipped and handled in its flat state until it is desiredto apply the same to a joint when it is only necessary to place it upon the joint and bend the central sections at right angles to each other and the wings at right angles to said central sections and secure the device to the frame by driving the prongs 13 into the woodwork. Such a joint is cheap to manufacture occupies but small space for storing or shipping and when applied to a frame will rigidly secure the meeting ends of the rails of said frame together and protect the corners from wear and tear.

Of course I do not wish to be limited to the exact details of construction as herein shown as these may be varied within the limits of the appended claims without departing from the spirit of my invention.

Having thus fully described my invention, what I claim as new and useful is 1. As a new article of manufacture an angle joint consisting of a blank having two central sections connected together by a score, wings one set connected to each of the central sections by scorings, each Wing having an extension formed therewith, certain of said wings and extensions having rectangular openings formed therethrough, and attaching prongs partially cut from said blank.

2. An angle joint consisting of two central sections connected together by a scoring, a pair of wings formed with each of said central sections and connected therewith by scorings, extensions formed with said wings, certain of said wings and extensions having rectangular openings therethrough, and attaching prongs partially cut from the joint and adapted to pass throu h said openings.

In testimony whereof %l have hereunto aflixed my signature. I

JOHN MAIERS. 

